Emerson EZH and EZHSO Series Pressure Reducing Regulators Bedienerhandbuch PDF herunterladen (Seite 16)

EZH and EZHSO Series

travel indicator tting (key 141) and lifting out

the travel indicator assembly. See the Travel

Indicator Maintenance section for the proper

maintenance procedure.

3. Loosen out the hex nuts (key 23) and remove the

washers (key 22) and the cap screws (key 21).

Remove all the short bolts rst, then evenly

remove the two long bolts (key 39), indicated

with (LB) on the head and brackets (key 35).

Make sure to balance the upper actuator casing

while removing the spring tension. Carefully lift

the upper actuator casing (key 11) off the lower

actuator casing (key 5). Remove spring (key 13).

4. Remove the socket head cap screws (key 16).

Lift off the diaphragm (key 20) and the inlet plate

(key 18). Remove O-rings (keys 15 and 17).

Inspect the diaphragm and O-rings for damage or

wear and replace if necessary.

5. Inspect the upper actuator casing (key 11),

O-ring (key 9), anti-friction split rings (key 8) and

anti friction ring (key 4) for damage or wear. If

damaged, remove the O-ring and split rings and

replace with new parts. Lightly lubricate the O-ring

and split rings. Place the split rings in the body

rst, then slide the O-ring between the split rings.

Lubricate and reinstall the anti-friction ring (key 4).

6. Remove hex nuts (key 26) from the stud bolts

(key 24). Lift off the lower actuator casing (key 5).

Remove the hex socket cap screws (key 33)

and spring lock washers (key 32). Lift off the

disk holder assembly (key 30) and disk retainer

(key 31).

7. Slide the sleeve (key 14) out of the lower actuator

casing (key 5) and slide the outlet plate (key 19)

off of the sleeve. Check the sleeve for scratches,

burrs or other damage and replace if necessary.

8. Inspect the lower actuator casing (key 5), O-rings

(keys 9 and 62), anti-friction split rings (key 8)

and anti-friction ring (key 4) for damage or wear.

If damaged, remove the O-ring and split rings and

replace with new parts. Lightly lubricate the O-ring

(key 9) and split rings. Place the split rings in the

body rst, then slide the O-ring (key 9) between

the split rings. Lubricate and mount O-ring (key 62)

outside of the lower actuator casing (key 5).

9. Slide the outlet plate (key 19) onto the sleeve

(key 14) and slide the sleeve into the lower

actuator casing (key 5). Place the disk holder

(key 30) and disk retainer (key 31) on the sleeve

adaptor (key 27). Insert the spring lock washers

(key 32) and hex socket cap screws (key 33) and

tighten. See Torque Specications (Table 4) for

proper torque values.

10. Lightly lubricate the O-rings (keys 15 and 17) and

the inner and outer diaphragm (key 20) edges.

Place the inlet plate (key 18) and the diaphragm

(key 20) on the sleeve (key 14). Make sure O-rings

(keys 15 and 17) are correctly positioned. Insert

and tighten the hex socket cap screws (key 16).

See Torque Specications (Table 4) for proper

torque values.

Note

When tightening fasteners arranged in a

circular pattern, alternate the tightening

of each fastener with the fastener

directly across from it using a “star”

criss-cross pattern for ve times, until

proper specied torque is achieved.

Each time around, when all screws are

tightened to the required torque, the

diaphragm will compress a little until

the plates are in direct, metal-to-metal,

contact. It will take at least ve times

around before this happens. Only then

will the applied torque on each screw

remain at the required value.

11. Carefully lift the lower actuator casing assembly

(key 5) and place on the body (key 1). Make sure

to match up the alignment marks. Secure with

stud bolts and nuts (keys 24 and 26). See Torque

Specications (Table 4) for proper torque values.

12. Lightly lubricate the spring (key 13) and place on

the inlet plate (key 18).

13. Carefully place the upper actuator casing (key 11)

on the lower actuator casing (key 5). Make sure

to match up the alignment marks. Insert the

two long bolts (key 39) 180° apart and away

from anges. Place the washers (key 22), hex

nuts (key 23) and brackets (key 35) on the long

bolts and evenly tighten. Using proper bolting

techniques, install remaining short bolts (key 21),

washers and hex nuts. See Torque Specications

(Table 4) for proper torque values.

14. Place travel indicator assembly (keys 138, 139,

140, 141, 142A or 142B, 143, 144, 145, 160

and 192) in the upper actuator casing (key 11),

if present and tighten the travel indicator tting

(key 141).

For EZHSO Series:

1. Make a mark on the upper actuator casing

(key 11), lower actuator casing (key 5),

intermediate ange (key 25) and body (key 1) to

indicate proper alignment.

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 39 40

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